CN104155503A - Testing circuit and testing method for voltage drop of charging loop of solar controller - Google Patents
Testing circuit and testing method for voltage drop of charging loop of solar controller Download PDFInfo
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- CN104155503A CN104155503A CN201410246602.5A CN201410246602A CN104155503A CN 104155503 A CN104155503 A CN 104155503A CN 201410246602 A CN201410246602 A CN 201410246602A CN 104155503 A CN104155503 A CN 104155503A
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Abstract
The invention relates to a testing circuit and a testing method for voltage drop of a charging loop of a solar controller. The testing circuit comprises a solar controller, a direct current voltage stabilization loop, a storage battery loop and an adjustable load loop. The direct current voltage stabilization loop is connected at a solar pole plate end of the solar controller. The storage battery loop and the adjustable load loop are parallelly connected at a storage battery end of the solar controller. The testing circuit and the testing method provided by the invention are simple to operate, easy to control and short in test time, and loss of a storage battery in use is prevented.
Description
Technical field
The present invention relates to solar cell application field, particularly, relate to a kind of controller for solar charge circuit pressure fall-off test circuit and method of testing.
Background technology
Solar photovoltaic generation system is mainly comprised of sun power pole plate, controller for solar, accumulator at present, and wherein accumulator is to control its charging and electric discharge by controller for solar.
In solar photovoltaic generation system, the charge circuit pressure drop of solar control system, in GB/T26264-2010 < < communication with being described below in solar power supply system > >: in feeding type controller and width modulation type controller step by step, system is when output rated current, and charge circuit (comprising Direct Current Distribution Unit) voltage drop should be not more than 5% of VD nominal value.
Being described below in GB/T19064-2003 < < domestic solar photovoltaic power supply system technical conditions and test method > >: the voltage drop loss of charging Time Controller must not surpass 5% of system rated voltage.
For the test method of charge circuit voltage drop, GB/T26264-2010 < < communicates by letter with having provided test method in solar power supply system > >.Fig. 1 shows the circuit connection diagram of existing controller for solar charge circuit pressure fall-off test circuit.As shown in Figure 1, to charge circuit, to test be when controller quota charging current in pressure drop, use the voltage drop of D.C. voltmeter V1 ' and V2 ' measurement charge circuit (comprising Direct Current Distribution Unit), to judge whether standard compliant regulation.
If but according to GB/T26264-2010 < < communication solar power supply system > > fundamental test circuit diagram (as Fig. 1), allow charge in batteries loop reach rated current, need first will, by accumulator electric-quantity emptying, then be connected to controller accumulator terminal.Now the charging current of accumulator must reach controller ratings.Along with the rising of battery tension, charged electrical fails to be convened for lack of a quorum and diminishes gradually, and now charging current is uncontrollable.The moment that testing staff may reach ratings in charging current hardly accurately completes the measurement of charge circuit pressure drop.If one-shot measurement is inaccurate, must will after battery discharge, retests, thereby extend proving time.In addition, frequently discharge and recharge and certainly will shorten the life of storage battery.
Summary of the invention
The invention provides a kind of controller for solar charge circuit pressure fall-off test circuit and method of testing, its test operation is simple, is easy to control, and the test duration is short, and has avoided using accumulator and the loss that causes accumulator.
For this purpose, the present invention proposes a kind of controller for solar charge circuit pressure fall-off test circuit, described test circuit comprises: controller for solar, DC voltage-stabilizing loop, accumulator loop and tunable load loop, described DC voltage-stabilizing loop is connected to the sun power plate end of described controller for solar, and described accumulator loop and described tunable load loop are connected to the accumulator terminal of described controller for solar in parallel.
Wherein, described accumulator loop comprises accumulator, the first switch, the first voltage table and the first reometer, described the first switch is used for controlling described accumulator loop and whether is connected to described controller for solar, described the first voltage table is for measuring the voltage of described accumulator, and described the first reometer is for measuring the electric current in described accumulator loop.
Wherein, described tunable load loop comprises tunable load, second switch, second voltage table and the second reometer, described second switch is used for controlling described tunable load loop and whether is connected to described controller for solar, described second voltage table is for measuring the voltage of described tunable load, and described the second reometer is for measuring the electric current in described tunable load loop.
Wherein, described DC voltage-stabilizing loop comprises D.C. regulated power supply, the 3rd switch, tertiary voltage table and the 3rd reometer, described the 3rd switch is controlled described DC voltage-stabilizing loop and whether is connected to described controller for solar, described tertiary voltage table is for measuring the voltage of described D.C. regulated power supply, and described the 3rd reometer is for measuring the electric current in described DC voltage-stabilizing loop.
According to another aspect of the present invention, provide a kind of above-mentioned test circuit method that pressure drop is tested to controller for solar charge circuit of using, described method of testing comprises step:
S1, closed described the first switch, makes described accumulator loop be connected to described controller for solar, and starts described controller for solar;
S2, closed described the 3rd switch, makes described DC voltage-stabilizing loop be connected to described controller for solar;
S3, closed described second switch, makes described tunable load loop be connected to described controller for solar, and disconnects described the first switch, and described accumulator loop and described controller for solar are disconnected;
S4, regulates described tunable load, observes the value of described the second reometer, when the value of described the second reometer reaches rated current, records the value of described tertiary voltage table and the value of described second voltage table;
S5, does poor calculating, the charge circuit pressure drop using result of calculation as described controller for solar by the value of the value of described tertiary voltage table and described second voltage table.
Use controller for solar charge circuit pressure fall-off test circuit of the present invention and method of testing, there is following beneficial effect:
1), owing to can controlling accurately charging current, so charging current is very easy to reach the load current value of the controller of stipulating in standard, meets test condition and the test method in standard, described completely;
2), this detection method has easy to operately, shortens test period, avoided accumulator large current charge to shorten the advantages such as harm of the life of storage battery;
3), this detection method used novel charging current control method, by DC load, replaces the mode of accumulator, control from sun power pole plate to the charging current accumulator terminal flexibly;
4), use after this detection method, reviewer can be controlled at charging current on certain current value accurately, rather than along with the different charging currents of depth of charge are changing in real time, thereby has met accuracy and the accuracy of test.
Accompanying drawing explanation
By reference to accompanying drawing, can more clearly understand the features and advantages of the present invention, accompanying drawing is schematically to should not be construed as the present invention is carried out to any restriction, in the accompanying drawings:
Fig. 1 shows the circuit connection diagram of existing controller for solar charge circuit pressure fall-off test circuit;
Fig. 2 shows the circuit connection diagram of controller for solar charge circuit pressure fall-off test circuit of the present invention;
Fig. 3 shows the process flow diagram of the use controller for solar charge circuit pressure fall-off test circuit method that pressure drop is tested to controller for solar charge circuit of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention is described in detail.
Fig. 2 shows the circuit connection diagram of controller for solar charge circuit pressure fall-off test circuit of the present invention.
With reference to Fig. 3, the controller for solar charge circuit pressure fall-off test circuit of embodiments of the invention comprises: accumulator loop 100, tunable load loop 200, DC voltage-stabilizing loop 300 and controller for solar 400, accumulator loop 100 and tunable load loop 200 are connected to the accumulator terminal of controller for solar 400 in parallel, and DC voltage-stabilizing loop 300 is connected to the sun power plate end of controller for solar 400.
Accumulator loop 100 comprises accumulator 101, the first switch 102, the first voltage table 103 and the second reometer 104, whether the first switch 102 is connected to controller for solar 400 for controlling accumulator loop 100, the first voltage table 103 is for measuring the voltage of accumulator 101, and the first reometer 104 is for measuring the electric current in accumulator loop 100.
Tunable load loop 200 comprises tunable load 201, second switch 202, second voltage table 203 and the second reometer 204, whether second switch 202 is connected to controller for solar 400 for controlling tunable load loop 200, second voltage table 203 is for measuring the voltage of tunable load 201, and the second reometer 204 is for measuring the electric current in tunable load loop 200.
DC voltage-stabilizing loop 300 comprises D.C. regulated power supply 301, the 3rd switch 302, tertiary voltage table 303 and the 3rd reometer 304, whether the 3rd switch 302 is connected to controller for solar 400 for controlling DC voltage-stabilizing loop 300, tertiary voltage table 303 is for measuring the voltage of D.C. regulated power supply 301, and the 3rd reometer 304 is for measuring the electric current in DC voltage-stabilizing loop 300.
Fig. 3 shows the process flow diagram of the use controller for solar charge circuit pressure fall-off test circuit method that pressure drop is tested to controller for solar charge circuit of the present invention.
In another embodiment of the present invention, use the above-mentioned test circuit method that pressure drop is tested to controller for solar charge circuit as follows:
S1, closed the first switch 102, is connected to controller for solar 400 by accumulator loop 100, and starts controller for solar 400;
S2, whether closed the 3rd switch 302, is connected to controller for solar 400 by DC voltage-stabilizing loop 300, and check definite normal to accumulator terminal loop from sun power plate end.
S3, closed second switch 202, tunable load loop 200 is connected to controller for solar 400, and disconnect the first switch 102, accumulator loop 100 and controller for solar 400 are disconnected, use tunable load loop 200 to replace accumulator loop 100, now D.C. regulated power supply 301 is directly to tunable load 201 electric discharges;
S4, regulates tunable load 201, observes the value of the second reometer 204, makes the value of the second volume reometer 204 reach rated current, then records the value of tertiary voltage table 303 and the value of second voltage table 203;
S5, does poor calculating by the value V2 of the value V3 of tertiary voltage table 303 and second voltage table 203, i.e. Δ V=V3-V2, the charge circuit pressure drop using result of calculation Δ V as controller for solar.
Known by above-described embodiment, use controller for solar charge circuit pressure fall-off test circuit of the present invention and method of testing, there is following beneficial effect:
1, owing to can controlling accurately charging current, so charging current is very easy to reach the load current value of the controller of stipulating in standard, meets test condition and the test method in standard, described completely;
2. this detection method has easy to operately, shortens test period, has avoided accumulator large current charge to shorten the advantages such as harm of the life of storage battery;
3. this detection method has been used novel charging current control method, by DC load, replaces the mode of accumulator, controls from sun power pole plate to the charging current accumulator terminal flexibly;
4. use after this detection method, reviewer can be controlled at charging current on certain current value accurately, rather than along with the different charging currents of depth of charge are changing in real time, thereby met accuracy and the accuracy of test.
Although described by reference to the accompanying drawings embodiments of the present invention, but those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, such modification and modification all fall into by within claims limited range.
Claims (5)
1. controller for solar charge circuit pressure fall-off test circuit, is characterized in that, described circuit comprises:
Controller for solar, DC voltage-stabilizing loop, accumulator loop and tunable load loop, described DC voltage-stabilizing loop is connected to the sun power plate end of described controller for solar, and described accumulator loop and described tunable load loop are connected to the accumulator terminal of described controller for solar in parallel.
2. controller for solar charge circuit pressure fall-off test circuit according to claim 1, it is characterized in that, described accumulator loop comprises accumulator, the first switch, the first voltage table and the first reometer, described the first switch is used for controlling described accumulator loop and whether is connected to described controller for solar, described the first voltage table is for measuring the voltage of described accumulator, and described the first reometer is for measuring the electric current in described accumulator loop.
3. controller for solar charge circuit pressure fall-off test circuit according to claim 1, it is characterized in that, described tunable load loop comprises tunable load, second switch, second voltage table and the second reometer, described second switch is used for controlling described tunable load loop and whether is connected to described controller for solar, described second voltage table is for measuring the voltage of described tunable load, and described the second reometer is for measuring the electric current in described tunable load loop.
4. controller for solar charge circuit pressure fall-off test circuit according to claim 1, it is characterized in that, described DC voltage-stabilizing loop comprises D.C. regulated power supply, the 3rd switch, tertiary voltage table and the 3rd reometer, described the 3rd switch is controlled described DC voltage-stabilizing loop and whether is connected to described controller for solar, described tertiary voltage table is for measuring the voltage of described D.C. regulated power supply, and described the 3rd reometer is for measuring the electric current in described DC voltage-stabilizing loop.
5. use the test circuit method that pressure drop is tested to controller for solar charge circuit described in the claims 1～4, it is characterized in that, described method comprises:
S1, closed described the first switch, makes described accumulator loop be connected to described controller for solar, and starts described controller for solar;
S2, closed described the 3rd switch, makes described DC voltage-stabilizing loop be connected to described controller for solar;
S3, closed described second switch, makes described tunable load loop be connected to described controller for solar, and disconnects described the first switch, and described accumulator loop and described controller for solar are disconnected;
S4, regulates described tunable load, observes the value of described the second reometer, when the value of described the second reometer reaches rated current, records the value of described tertiary voltage table and the value of described second voltage table;
S5, does poor calculating, the charge circuit pressure drop using result of calculation as described controller for solar by the value of the value of described tertiary voltage table and described second voltage table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410246602.5A CN104155503A (en) | 2014-06-05 | 2014-06-05 | Testing circuit and testing method for voltage drop of charging loop of solar controller |
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| CN201410246602.5A CN104155503A (en) | 2014-06-05 | 2014-06-05 | Testing circuit and testing method for voltage drop of charging loop of solar controller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112526963A (en) * | 2020-10-23 | 2021-03-19 | 武汉伟立德新能源有限公司 | Testing method of solar charge and discharge controller |
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Application publication date: 20141119 |